-blast. A suffix meaning an immature precursor cell of the type indicated by the preceding word. [G. blastos, germ]. immature precursor cell type; the cell type is denoted by the preceding syllables, e.g. osteoblast.
(plural defining moments) A moment in time that defines something, such as a person's success or failure, achievement or demise, talent, etc. A point at which the essential nature or character of a person, group, etc., is revealed or identified.
What is moment?   In physics and engineering, moment is usually defined as the force which causes anything to rotate. Just like force, which causes an object to move in a linear directionâ¦. Moment can be treated like the force which causes an object to rotate about a certain defined axis. Unlike force however, an axis of rotation needs to be defined before moment can be calculated.